@ccs-hello thx. I fixed this.

@Chris-Stratton
Ok. I understood. I'll update scheme soon.

@György-Farkas
About capacitors on the voltage regulator.
Power supply only from the USB. So we can use the low value capacitors for suppressing low noise.

@György-Farkas
The values of resistors and capacitors were taken from the extension dock of omega2. Include voltage divisors on the buttons. I just added capacitors to avoid button bounce.

@Gyozo-Nemes Thank you very much! It really was unconnected. I updated screenshots and project.

Hello!

I'm just created my own expension dock. It's contains the following:
1. USB host;
2. USB device;
3. Ethernet;
4. ON/OFF switch with power indicator;
5. Resset Button;
6. 1 User LED and 1 User Button.

3D view

Top View

Bottom View

It has on onboard linear voltage regulator (3.3 v), ESD protection scheme, CH340G USB-UART converter. Also it has GPIO Headers and individual Headers for I2S, SPI, UART/I2C and 3.3V/5V/GND. All components you can see on the Scheme:

Altium project and libs you can find on the GitHub rep.

Please, let me know if I have missed out anything.

UPD: Added new capacitors.